--- a/usr/portage/eclass/toolchain.eclass	2018-06-12 11:18:20.629028600 +0200
+++ b/usr/portage/eclass/toolchain.eclass	2018-06-12 11:20:12.421708900 +0200
@@ -2198,12 +2198,12 @@
 
 		mkdir -p "${EROOT}"usr/{share/gcc-data,sbin,bin}
 		# DATAPATH has EPREFIX already, use ROOT with it
-		cp "${ROOT}${DATAPATH}"/fixlafiles.awk "${EROOT}"usr/share/gcc-data/ || die
-		cp "${ROOT}${DATAPATH}"/fix_libtool_files.sh "${EROOT}"usr/sbin/ || die
+		cp "${ROOT%/}${DATAPATH}"/fixlafiles.awk "${EROOT}"usr/share/gcc-data/ || die
+		cp "${ROOT%/}${DATAPATH}"/fix_libtool_files.sh "${EROOT}"usr/sbin/ || die
 
 		# Since these aren't critical files and portage sucks with
 		# handling of binpkgs, don't require these to be found
-		cp "${ROOT}${DATAPATH}"/c{89,99} "${EROOT}"usr/bin/ 2>/dev/null
+		cp "${ROOT%/}${DATAPATH}"/c{89,99} "${EROOT}"usr/bin/ 2>/dev/null
 	fi
 
 	if use regression-test ; then
@@ -2272,7 +2272,7 @@
 		[[ -n ${current_specs} ]] && use_specs=-${current_specs}
 
 		if [[ -n ${use_specs} ]] && \
-		   [[ ! -e ${ROOT}/etc/env.d/gcc/${CTARGET}-${GCC_CONFIG_VER}${use_specs} ]]
+		   [[ ! -e ${ROOT%/}/etc/env.d/gcc/${CTARGET}-${GCC_CONFIG_VER}${use_specs} ]]
 		then
 			ewarn "The currently selected specs-specific gcc config,"
 			ewarn "${current_specs}, doesn't exist anymore. This is usually"